國內(nèi)某材料與冶金學(xué)院的研究者們系統(tǒng)地研究了304不銹鋼的高溫物理性能，豐富并完善了對該鋼種的認(rèn)識，為連鑄生產(chǎn)及數(shù)值模擬提供了重要的理論基礎(chǔ)數(shù)據(jù)。在304不銹鋼的連鑄生產(chǎn)中，中間包溫度應(yīng)控制在1470～1510℃，拉坯速度根據(jù)鑄坯寬度控制在0.9～1.3m/min，水口插入深度保證在160mm左右。對某廠生產(chǎn)的304不銹鋼進(jìn)行高溫?zé)嵛镄詼y試，材料的主要化學(xué)成分見下表:表1304不銹鋼的化學(xué)成分（質(zhì)量分?jǐn)?shù)，%）CSiMnPSCrNi0.0400.451.180.0300.00317.2458.112使用NETZSCHDIL402C熱膨脹儀與STA449F3綜合熱分析儀，對304不銹鋼的高溫膨脹與收縮系數(shù)、定壓熱容及差示掃描量熱（DSC）曲線進(jìn)行測試。
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沖擊指標(biāo)十分重要，是檢驗材質(zhì)的一個關(guān)鍵指標(biāo)。影響高聚物的實際強度因素主要分兩種：一是與材料本身有關(guān)，例女II：高聚物的化學(xué)結(jié)構(gòu)，分子量及其分布，是否用回收的舊原料、支化和交聯(lián)，結(jié)晶與取向，增塑劑等；二是與外界條件有關(guān)，：溫度、濕度、光照、氧化、老化和外界的作用力等等。聚合物的分子量低時，沖擊強度會降低。隨著分子量的增加，分子問的作用力增加，沖擊強度會升高。所以原材料是很重要的。其次，增塑劑也影響沖擊性能。
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